IAB Node IP Address Configuration via SRB3 or SRB1
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Solution Overview
Problem
Existing mobile communication systems face challenges in efficiently providing integrated access and backhaul node control, particularly in managing IP address assignment and reporting in dual connectivity scenarios, which is crucial for supporting diverse services and enhancing network performance.
Innovation Solution
The method involves an integrated access and backhaul (IAB) node that identifies the establishment of a signaling radio bearer (SRB3) and transmits an IABotherinformation message to a secondary node (SN) via SRB3 when established, or to a master node (MN) via SRB1 when SRB3 is not established, using new radio dual connectivity (NR-DC) to manage IP address assignment and reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If IP address management is implemented in dual connectivity scenarios with IAB nodes, then network service area expansion and integrated access and backhaul functionality are improved, but device complexity and control management complexity increase
Solution Approach 1:
The patent introduces a donor node as an intermediary entity that centralizes IP address management for IAB nodes. The donor node receives IABotherinformation messages from IAB nodes and handles IP address assignment and reporting, thereby simplifying the control management complexity while enabling integrated access and backhaul functionality. This mediator approach allows complex IP management to be centralized rather than distributed across multiple nodes.
Solution Approach 2:
The patent segments the control functions by separating the IP address management responsibilities from the IAB node itself and assigning them to the donor node. This segmentation divides the system into distinct functional components: the IAB node focuses on access and backhaul operations, while the donor node handles IP address configuration and management. This functional segmentation reduces the complexity at each individual node while maintaining overall system capability.
2Productivity
If SRB3 bearer is established for direct IAB node to donor node communication, then communication efficiency is improved, but device complexity increases due to additional bearer management
Solution Approach 1:
The patent implements self-service mechanisms where the IAB node autonomously determines whether to establish an SRB3 bearer based on its communication needs with the donor node. The node can independently initiate IP address management communications through SRB3 when beneficial, without requiring complex centralized control for each bearer establishment decision. This self-service approach improves communication efficiency while limiting the increase in bearer management complexity through autonomous local decision-making.
Data Source
AI summary
The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure provides a method performed by an integrated access and backhaul (IAB) node in a wireless communication system, the method comprising the steps of: identifying whether or not a signaling radio bearer (SRB) 3 is established; and if the SRB3 is established, transmitting an IABotherinformation message to a secondary node (SN) via the SRB3, and if the SRB3 is not established, transmitting, to a master node (MN) via an SRB1, a radio resource control (RRC) message including the IABotherinformation message.